. The ferns of North America [microform] : colored figures and descriptions, with synonymy and geographical distribution, of the ferns (including the ophioglassaceae) of the United States of America and the British North American possessions. Ferns; Fougères. FERNS OF NORTH AMERICA. 47 where it prefers to grow. In seasons when the ponds are nearly dry the root-stock may be traced a long distance from the fronds. I have torn up a root-stock ten feet long, and found over six feet of it undecayed. It is irregularly branched, soft and fleshy; the rind is moderately tough, black, and naked, except
. The ferns of North America [microform] : colored figures and descriptions, with synonymy and geographical distribution, of the ferns (including the ophioglassaceae) of the United States of America and the British North American possessions. Ferns; Fougères. FERNS OF NORTH AMERICA. 47 where it prefers to grow. In seasons when the ponds are nearly dry the root-stock may be traced a long distance from the fronds. I have torn up a root-stock ten feet long, and found over six feet of it undecayed. It is irregularly branched, soft and fleshy; the rind is moderately tough, black, and naked, except near the advancing end, where it is thinly cov- ered with small ovate entire yellowish-brown scales. It con- sists mainly of soft white parenchyma, through which there run several irregular bundles and threads of fibro-vascular tissue. The stalks, which are continuous with the root-stock, rise from it a few inches apart, and those which support living fronds arc found about six inches from the apex. Nearer the apex are found a few buds, representing undeveloped fronds, and a few old stalks may be seen back of the living ones; but they disappear in a year or two, leaving the root-stock bare, except for the not very abundant rootlets. The stalks vary in length from a few inches up to over two feet. They are erect, rigid, nearly black near the base, but of a dull brownish-green higher up. There arc at first a few little appressed scales borne near the base of the stalk, but these soon disappear. The fibro-vascular bundles are about seven, arranged just beneath the outer sclerenchymatous sheath, the two anterior ones much larger than the others. The fronds are nearly erect, sub-coriaceous in texture, and of a dark full herbaceous green. The largest ones are two and a half feet long and about a foot wide, and at a. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrat
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Keywords: ., bookauthoreatondan, bookcentury1800, bookdecade1870, bookyear1879
